Apparatus for the manufacture of cement blocks or slabs.



7 PATENTED DEC. 27, 1904. W. A. G.-WALLER. ARPARAIAUS FORTHEMANUFAGTURBOF CEMENT BLOCKS 0R SLABS.

APPLIOATION FILED JUNE 11,1904.

2 SHEETS-SHEET l.

jutezscsecs.

No. 778.344. PATENTED DEC. 27, 1904.

4 w. A. 0. WALLER. APPARATUSIOR THE MANUFACTURE OF CEMENT BLOCKS 0RSLABS.

APPLICATION FILED JUNE 11, 1904.

2 SHEETS-SHEET 2.

: Wlbmxmr UNITED Y "STATES Patented December 27, 1904.

PATENT OFFICE.

APPAFiATUS FOR THE MANUFACTURE OF CEMENT BLOCKS OR SLABS.

SPECIFICATION forming part of Letters Patent No. 778,344, dated December27, 1904. Application filed June ll, 1904:. Serial No. 212,106.

'London, England, have invented new and useful Improvements in Apparatusfor the Manufacture of Oement Blocks or Slabs, of whichthe following isa specification.

My invention relates to improvements in apparatus for the manufacture ofconcrete or cement blocks or slabs chiefly designed for useas'partitions in buildings and which are provided in the edges withgrooves or channels for the reception of keys or fillets for fiX- ingthe said blocks or slabs in position.

In the accompanying drawings, Figure 1 is a side elevation of apparatusfor molding-slabs in accordance with my invention; and Fig. 2

is a sectional end elevation of the same, the

section being taken on the line 2 2, Fig. 1.

Fig. 3 is a vertical section on the line 3 3, Fig.

2; and Fig. 4. is a horizontal section on the line 4 4, Fig.3. Fig. 5 isa sectional view illustrating the operation of the apparatus,

and Figs. 6 and 7 are elevations of details. Fig. 8 is a sectionillustrating another detail.

a a are two end frames or standards, which are braced together by theangle-irons b I) at about the center of their height and by bars orplates 0 0 at the base. On the angle-irons 56 are supported a number ofbars d d, Figs. 2, 3, and 5, which form the bottom of the mold-box,which is represented as having three chambers e e 0, each of the bars OZforming the bottom of one of the said chambers.

ff are the sides of the mold-box, which are hinged at g g to theangle-irons I) b of the frame, so that they can be turned down, and 71 hare the end plates of the mold-box, the said plates each serving as oneof the walls of the two outermost mold-chambers e and being mounted uponthe horizontal rectangular frame 27, which is designed to be raised andlowered, as hereinafter described, the said frame being guided in itsmovements by the legs a of the standards a a. This rectangular framealso carries the partitions j j, which are arranged to lie in planesparallel to the ends it h, the said partitions forming, the inner wallsof the outermost chambers e e and also the walls of the inner chamber a.These walls and partitions, which are preferably composed of glasssheets mounted in U-shaped metal frames in, tied together at their upperends by bars if, as shown in Fig. 6, are collectively connected totie-bars [b3 at the ends for the purpose of holding the walls and theplates rigidly and in absolute parallelism. The side walls ff areprovided with fillets it, and fillets la -are also laid upon the bottomplates d 0?,

these fillets corresponding in thickness with the thickness ofthe"frames 7b to provide for the formation o'f'square corners at thesides of the slabs.

The raising and the lowering of the frame 71 relatively with the bars cld can be effected in any suitable manner. In the drawings I haverepresented the said frame as being providedat each end with a rack 70,engaging with a pinlon m on a shaft 12,, carried in bearlngs on theupper ends of the side frames at a, the sald shaft receiving its motionfrom a crank-handle 0 through the medium of a worm p and wormwheel p..

In using the apparatus the walls and partitions it and j are raised totheir highest positi0ns,and the side doors f f are closed against them,as shown in Figs. 1 to 4, .the said doors being secured by any suitablemeans such, for instance, as turnbuckles Q 9, Figs.

1 and 2. The mold-chambers are then filled with the composition of whichthe slabs are to be composed. When these chambers have been filled, theupper side of each chamber is closed by a fillet, such as r, Fig.7,which is inserted between the faces of the mold and sup- 1 ported on thefillets if, their end being mitered to lie upon the correspondingmitered ends of the said fillets h These bars r serve to mold the upperedges of the slabs. When the material has sufficiently set in the molds,the fillets r r are taken out, the side doors ff are gether with thewalls it and partitions so that the molded slabs'are left supported uponthe bottom bars (Z d, as clearly shown in Fig.

0. They can then be lifted off and removed to any suitable position fordrying.

The upper edges of the partitions and walls,

opened out, and the framed is lowered, to-

are in some cases roughened or serrated, so that as they are lowered thesurfaces of the slabs or blocks will be roughened.

s s are brackets projecting from the side frames 0 a and which serve forsupporting a plate upon which the molded slabs can be laid as they areremoved from the bars dd. These brackets s 8 may be extended for anydesired length and provided with rails, so as to facilitate the removalof the plate and slabs upon it.

In order to form the grooves or channels around the edges of the slabs,ribs it are provided upon the fillets if on the side doors ff and on thefillets If if, and the loose fillets r r are also formed withcorresponding ribs When it is required to form the slabs hol low, Iadvantageously provide the arrangement illustrated in Fig. 8that is tosay, I employ rods t, supported on cross-bars on the frame 71, the saidrods passing through holes in the lower fillets 7L5 and projectingupward within the chambers 06. By this arrangement when the frame 2' islowered, as hereinbefore described, to remove the partitions j and wallsfrom the slabs the rods t will also be withdrawn from the slabs leavingholes therein.

I sometimes provide for dropping the walls and partitions It It and ifinto a tank, whereby the surfaces thereof will be lubricated tofacilitate the movement of the walls and partitions from the slabs, asshown in dotted lines in Fig. 2. This, however, is not'neeessary, aslubrication can be otherwise applied, if required.

It is to be understood that, if desired, the walls and partitions h 7Land j j instead of being arranged to move vertically downward throughthe bottom of the mold-box may be arranged to be moved upward orlaterally to draw them off the slabs which remain at rest. It is also tobe understood that although I have described the apparatus as applicablefor molding partition-slabs it is equally applicable for molding slabsor blocks for other purposes and with or without grooves or channels inthe edges. Furthermore, it will be understood that an apparatus can beconstructed for molding any desired number of slabs or blockssimultaneously, the three shown in the drawings being merely given as anexample.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In apparatus for the manufacture of eement blocks orslabs, a mold comprising among its members vertical side plates, rigidlyconnected and capable of movement in their respective planes, astationary bar interposed between said plates and forming the bottom ofthe mold, movable end plates forming the ends of the mold when inoperative position, and a removable top plate, substantially asdescribed.

2. In apparatus for the manufacture of coment blocks or slabs, amoldcomprisingamong its members vertical side plates rigidly connected andcapable of movement in their respective planes, a stationary barinterposed between said plates and forming the bottom of the mold,movable end plates forming the ends of the mold when in operativeposition, and a removable top plate, said bottom plate, end plates andtop plates being provided with a projecting rib for forming grooves orchannels in the edges of the block, substantially as described.

3. In apparatus for the manufacture of (-ement blocks or slabs, a moldfor making a plurality of the same simultaneously, comprising among itsmembers a plurality of verticall) disposed plates rigidly connected andcapable of joint movement in their respective planes, stationary barsinterposed between said plates, and forming the bottoms of themoldingehambers, movable end plates each of which when in operationforms the end wall of a plurality of molding-chambers and a top plate,substantially as described.

t. In an apparatus for the manufacture of cement blocks or slabs, a moldcomprising among its members, two sideframes provided each with a plateforming one side of the molding-chamber, said frames being connectedrigidly for joint movement, a stationary bottom plate between saidfral'nes, movable end plates and a removable top plate, said bottomplate, end plates and top plate being provided with fillets,substantially as described.

5. In apparatus for the manufacture of cement blocks or slabs a moldhaving a lixed bottom, walls or partitions designed to move throughslots in the saidbottom, hinged plates for closing the sides of the moldand detach able strips formingthe top of the mold, substantially asdescribed.

6. In apparatus for the manufacture of cement blocks or slabs a moldhaving a lixed bottom, walls or partitions and one or more rods designedto move through slots or holes in the said bottom, hinged plates forclosing the sides of the mold and detachable strips forming the top ofthe mold,substantially as described.

VlIllJIAdl All'lllUli CAMERON Walddlll.

\Vitnesses:

J OHN E. BOUSFIELI), C. G. Rnnruun.

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